<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script>
		function fn(){
			
		}
		var fn;
		console.log("1fn:",fn);
		console.log("//////////////////");
		
		var fn2;
		function fn2(){
			
		}
		console.log("2fn2:",fn2);
		console.log("//////////////////");
		var fn3=10;
		function fn3(){
			
		}
		console.log("fn3:",fn3);
		
		
		console.log("a:",a);
		var a=10;
		console.log("a:",a);
		</script>
	</body>
</html>
